Creating Shrimp Scampi Pasta Bake is simple if you follow these clear steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C). Grease a 9×13 inch baking dish with cooking spray or butter.
2. Cook the Pasta: In a large pot of salted boiling water, cook the pasta according to package instructions until al dente. Drain and set aside.
3. Sauté the Shrimp: In a large skillet, heat the olive oil and butter over medium heat. Add the minced garlic and red pepper flakes, sautéing for about 1 minute until fragrant.
4. Add Shrimp: Add the shrimp to the skillet. Cook for about 2-3 minutes until they turn pink and opaque. Season with salt and pepper to taste. Remove from heat.
5. Make the Sauce: In the same skillet, add the heavy cream and lemon zest. Stir to combine, allowing the cream to simmer for a couple of minutes.
6. Combine Ingredients: In a large mixing bowl, combine the cooked pasta, sautéed shrimp, the cream mixture, and half of the Parmesan cheese. Mix well to ensure everything is evenly coated.
7. Transfer to Baking Dish: Pour the pasta and shrimp mixture into the prepared baking dish. Spread it evenly.
8. Top with Cheese: Sprinkle the remaining Parmesan and the shredded mozzarella cheese on top of the pasta.
9. Bake: Place the dish in the preheated oven and bake for 20-25 minutes, or until the top is golden and bubbly.
10. Garnish and Serve: Remove from the oven and let it cool for a few minutes. Garnish with fresh parsley before serving.

These steps will guide you in creating this incredible Shrimp Scampi Pasta Bake effortlessly.